-ly bbb bbi bbk bbl bbr bbs bby bi- bib bii bik bil bir bis biy bkb bkk bkl bkr bks blb bli blk bll blr bls bly brb bri brk brl brr brs bry bsb bsi bsk bsl bsr bss bsy by- byi byk byl byr bys ibb ibi ibk ibl ibr ibs iby iib iii iil iir iis ikb iki ikk ikl ikr iks il- ilb ili ilk ill ilr ils ily ir- irb iri irk irl irr irs iry is- isb isi isk isl isr iss isy iyr iys iyy kbb kbi kbk kbl kbr kbs kib kii kik kil kir kis kkb kki kkk kkl kkr kks kky kl- klb kli klr kls kly kri krk krl krr krs kry ksb ksi ksk ksl ksr kss kyl kyr kys lbb lbi lbk lbl lbr lbs lib lii lik lil lir lis lkb lkl lkr lks lky llb lli llk lll llr lls lly lrb lri lrk lrr lrs lry lsb lsi lsk lsl lsr lss lyk lyl lyr lys rbb rbi rbk rbl rbr rbs rib rii rik ril rir ris riy rkb rkk rks rky rli rll rlr rls rly rrb rri rrk rrl rrr rrs rsb rsi rsk rsl rsr rss ry- ryk ryr rys ryy sbb sbi sbk sbl sbr sbs sby sib sii sik sil sir sis sk- skb ski skk skl skr sks sky slb sli slk sll slr sls sly sr- srb sri srk srl srr srs sry ss- ssb ssi ssk ssl ssr sss sy- syb syi syk syl syr sys ybi ybl ybr ybs yby yii yir yis yki ykk yli ylk yll ylr yls yly yrs ysb ysi ysk ysl ysr yss ysy yyb yys yyy